1 说明
An administrator can now create a clone of a pluggable database only with the data model definition. The dictionary data in the source is copied as is but all user-created table and index data from the source is discarded.
从12.1.0.2开始，在克隆源PDB时，可以通过该特性只复制源pdb的数据字典里的数据，而忽略用户创建的表和索引数据
可以通过CREATE PLUGGABLE DATABASE语句中指定NO DATA来排除对象数据。从而会非常快的创建一个PDB。
注意：
-
使用该特性，必须使用CREATE PLUGGABLE DATABASE …FROM语句。
-
该特性不会对SYSTEM,SYSAUX生效，如果用户在这两个表空间中创建对象，那么这些对象会被完整的克隆，包括数据。
在使用该特性时，源PDB不能包含以下类型的表：
-
Advanced Queue (AQ) tables
-
Clustered tables
-
Table clusters
2 实验
2.1 查看当前PDB
SQL> show pdbs;
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 LEI1 READ WRITE YES
2.2 源库PDB创建测试数据
SQL> conn lei/lei@lei1;
Connected.
SQL> create table test_t(id number,name varchar2(50)) tablespace cndba;
Table created.
SQL> insert into test_t values(1,'sihong');
1 row created.
SQL> commit;
Commit complete.
2.3 克隆LEI1为SIHONG
SQL> CREATE PLUGGABLE DATABASE sihong FROM lei1
FILE_NAME_CONVERT = ('/u01/app/oracle/oradata/orcl/lei1/','/u01/app/oracle/oradata/orcl/sihong/',
'/u01/app/oracle/oradata/orcl/lei1/o1_mf_cndba_dr8kfogo_.dbf','/u01/app/oracle/oradata/orcl/sihong/cndba01.dbf',
'/u01/app/oracle/product/11.2.0.4/db_1/dbs/file','/u01/app/oracle/oradata/orcl/sihong/file') NO DATA; 2 3 4
Pluggable database created.
备注：
创建期间出些错，仅供参考：
- 临时表空间其中一个数据文件在另一个目录下，报错如下：
SQL> CREATE PLUGGABLE DATABASE sihong FROM lei1
FILE_NAME_CONVERT = ('/u01/app/oracle/oradata/orcl/lei1/', '/u01/app/oracle/oradata/orcl/sihong/') NO DATA; 2
CREATE PLUGGABLE DATABASE sihong FROM lei1
*
ERROR at line 1:
ORA-65005: missing or invalid file name pattern for file -
/u01/app/oracle/product/11.2.0.4/db_1/dbs/file
解决办法：手动指定文件名
'/u01/app/oracle/product/11.2.0.4/db_1/dbs/file','/u01/app/oracle/oradata/orcl/sihong/file'
- OMF管理的数据文件
SQL> CREATE PLUGGABLE DATABASE sihong FROM lei1
FILE_NAME_CONVERT = ('/u01/app/oracle/oradata/orcl/lei1/','/u01/app/oracle/oradata/orcl/sihong/',
'/u01/app/oracle/product/11.2.0.4/db_1/dbs/file','/u01/app/oracle/oradata/orcl/sihong/file') NO DATA; 2 3
CREATE PLUGGABLE DATABASE sihong FROM lei1
*
ERROR at line 1:
ORA-01276: Cannot add file
/u01/app/oracle/oradata/orcl/sihong/o1_mf_cndba_dr8kfogo_.dbf. File has an
Oracle Managed Files file name.
SQL> !oerr ora 01276
01276, 00000, "Cannot add file %s. File has an Oracle Managed Files file name."
// *Cause: An attempt was made to add to the database a datafile, log file,
// control file, snapshot control file, backup control file,
// datafile copy, control file copy or backuppiece with an Oracle
// Managed Files file name.
// *Action: Retry the operation with a new file name.
解决方法：
'/u01/app/oracle/oradata/orcl/lei1/o1_mf_cndba_dr8kfogo_.dbf','/u01/app/oracle/oradata/orcl/sihong/cndba01.dbf'
2.4 验证数据
SQL> alter session set container=sihong;
Session altered.
–数据没有克隆过来
SQL> select * from lei.test_t;
no rows selected
参考文档：http://docs.oracle.com/database/121/SQLRF/statements_6010.htm#SQLRF57032